C2221232323213331311331333133313231333132313331313311313312132321221   >>    C222123232321333131133133313331323133313231333131331131331213232122   <<    C2221232323213331311331333133313231333132313331313311313312132321223   >>      C2221232323213331311331333133313231333132313331313311313312132321222   >>